Smoke-consumer.



No. 701,296. Patented lune 3, I902. 11. CLUMP &. w. HOFMEISTER.

SMOKE CONSUMER.

(Application filed Feb. 15, 1902.)

(No Model.)

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DAVID oLUMP AND WILLIAM IIOFMEISTER, or sT. LOUIS, MIssoURI.

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SPECIFICATIGN forming part of LettersPatent No. 701,296; dated irune 3,1902. I l Application filed February 15, 1902. Serial No. 94,227. (No model.)

To aZZ whom it may concern.-

Be it known that we, DAVID CLUMP and WILLIAM HOFMEISTER, of the city of St: Louis, State of Missouri, have invented certain new and useful Improvements in Smoke- Consumers, of which the following is a full,

clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

Our invention relates to smoke-consuming furnaces; and it consists of the novel features herein shown, described, and claimed.

Our object is to construct a boiler-furnace or the like in such a way that it will give oif the least possible smoke; and our invention consists of a furnace comprising an ash-pit, side walls extending upwardly from the ashpit, a bridge-wall or back wall extending straight up from the ash-pit, the upper edge of said bridge-wall projecting forwardly over the grate, a grate mounted above the ash-pit between the side walls and in front of the bridge-wall, perforated pipes mounted in the side walls a suitable distance above the grate and in the projecting portion of the bridgewall, theopenings in said pipes discharging inwardly over the fire upon the grate, steam air-injectors connected to said pipes, and means of turning said pipes in their bearings as required to adjust the direction of the discharge into the fire.

Figure 1 is a vertical longitudinal section of a furnace constructed in accordance with the principles of our invention. Fig. 2 is a horizontal section above the grate. Fig. 3 is a cross-section of one of the injector-pipes.

Referring to the drawings. in detail, our improved smoke-consuming furnace consists of the ash-pit 5, the side walls 6 and 7, extending upwardly from the ash-pit,the bridgewall 8, extending upwardly behind the ashpit and having the forwardly-projecting portion 9 at its upper end, the gratelO, mounted above the ash-pit, the perforated injectorpipes 11 and 12, mounted in the side walls a suitable distance abovethe grate, and the perforated injector-pipe 13, mounted in the forwardly-extending projection 9 of the bridge-wall, the perforations 14 of said injector-pipes discharging horizontally inwardly over the fire, and the steam air-injectors 15, 16, and 17, connected to the injector-pipes 11,

bearings as required to change the direction of the discharge-openings 14. This rotary motion may be provided by making either the joint 18 or the joint 19 of each injector loose,so that the injector-pipe maybe screwed one way or the other as required to .attain the required direction of the discharge-openings. The injectors 15, 16, and 17 each consist of a nipple 20, connected to the steam-pipes 21 and having a reduced discharge-opening 22, the nipple 23, formedintegrally with the nipple 20 and in alinement therewith, and the nipple 24, formed integrally with the nipples 20 and 23,said nipple 24 extending backwardly and outwardly at an angle of about forty-five degrees, so that steam admittedthrough the pipes 21 and discharged through the reduced openings-22 into the nipples 23 will draw air through the nipples 24 and force the mixture of airand steam intothe injector-pipes 11, 12,

and 13 and discharge said air and steam through the perforations 14 into the fire. The adjustment ofthe direction of the discharge from the perforations 14 is illustrated in Fig. 3. Thus it will be seen that air and steam is injected into the fire from three sides, and the air passing through the draft-openings 25 is on the fourth side and passes over the fire. The result is greatly-improved combustion and the total elimination of smoke as soon as the fire is properly started and the equilibrium established.

We claim- 1. A smoke-consuming furnace comprising the ash-pit 5; the side walls 6 and 7 extending upwardly from the ash-pit; the bridgewall 8 extending upwardly behind the ash-pit and having the forwardly-projecting portion 9 at its upper end; 'a grate mounted above the ash-pit; the perforated injector-pipes 11 and 12 mounted in the side walls a suitable distance above the grate; the perforated injector-pipe 13 mounted in the forwardly-extending projection 9 of the bridge-wall; and the steam airinjectors 15, 16 and 17 connected to the injector-pipes 11, 12 and 13 said injector-pipes being independently rotatable in their bearings, substantially as specified.

2. A smoke-consuming furnace comprising the ash-pit 5; the side walls 6 and 7 extending upwardly from the ash-pit; the bridgewall 8 extending upwardly behind the ashpit and having the forwardly-projecting portion 9 at its upper end 3 a grate mounted above the ash-pit; the perforated injector-pipes 11 and 12 mounted in the side walls a suitable distance above the grate; the perforated injector-pipe 13 mounted in the forwardly-extending projection 9 of the bridge-wall; and the steam air-injectors 15, 16 and 17 connected to the injector-pipes 11, 12, and 13; said injector-pipes being independently rotatable in their bearings; each of said steam air-in j ectors comprising a nipple 20 connected Vitnesses:

ALFRED A. EIcKs, JOHN G. HIGDON. 

